Coupling



Feb, 25, 1936. J MIKULASEK 2,@32,297

COUPLING Filed D90. 3, 1954 (m mag/am ATTORNEY Patented Feb. 25, I936 UNITED STATES PATENT OFFICE COUPLING John Mikulasek, Newton, Iowa, assignor to Vaclav Losa, Coraopolis, Pa.

Application December 3, 1934, Serial No. 755,804

1 Claim. (01. 28575) This invention relates to couplings for tubular bore of the nipple and is formed with transverse members, such as pipes, hose, flexible tubes or corrugations whereby it will embed itself and conduits and its object is to provide a coupling be firmly retained in the nipple. The ferrule is the members of which may be easily fitted toalso formed with openings H, through the corgetherand will firmly hold together when engaged rugations, the purpose of which will presently but may be easily separated when necessary or appear. Fitted externally upon the nipple about desired. A further object is to provide a ccuthe inner end of the ferrule is a collar I 2 from pling which will prevent leaking, and a still furwhich a plurality of resilient fingers l3 extend to ther'object is to provide a coupling of simple and the end of the nipple in spaced relation thereto, 10 durable construction which is not apt to get out the fingers increasing in thickness toward their 10 of order. These stated objects, and other objects e end as ow n Figures 1 a d a a ring which will appear as the description proceeds, are H! is slidably mounted on the collar l2 and the attained in such a device as is illustrated in the fingers, the inner circumferene of the ring being accompanying drawing, and the invention resides slightly flared in accordance with the increase in certain novel features which will be particularly in thickness of the fingers. The ring is formed 15 defined in the appended claim. with a flange or bead l5 to facilitate handling, In the drawing: and flanges IE on the collar l2 and fingers l3 Figure 1 is a view of the improved coupling, prevent the ring from moving off the same.

partly in elevation and partly in longitudinal When the members of the coupling are to be section. engaged, they are brought together as shown in 0 Figure 2 is a longitudinal section showing the Figure 1, the nipple 8 entering and fitting snugly members of the coupling separated. in the flared bore of the member 3. The ring l4 Figure 3 is a transverse section on the line 3-4 is then pus d wa d m t p sit s wn of Figure 1. in Figure 2 to the position shown in Figure 1,

The drawing shows the coupling attached to the thereby compressing the fingers about the mem- 25 meeting ends of hose sections I, 2. The female her 3 and efiecting a strong frictional clamping member 3 of the coupling consists of a metal engagement of the fingers with said member. sleeve having 2. preferably flared bore 4 in one end The flared formation of the member 3 and the portion and having its bore in the other end portapered formation of the nipple causes a binding tion formed with transverse or circumferential wedging engagement between said elements which 30 corrugations or grooves, as indicated at 5, the will aid in holding the members f t Coup end of the hose section being received in the cortogether and will also resist leakage under normal rugated end of the coupling member. A ferrule pressure. Should the pressure in the hose in- 6 is inserted into the open end of the hose section crease, the pressure will act through the openings 3 and expanded whereby the hose is compressed II o e p d the pp outwardly against the between the ferrule and the coupling so as to bore 4, thereby m fi y binding h parts conform to and embed the corrugations so that e he and as g th ak-p qu ty of the member 3 will be firmly secured and cannot 1'Ihe coupling, a the transverse corrugations pull out of the hose. To facilitate the handling form ajnmflar spaces for the fluidto enter Circum' 40 of the coupling member it is provided with an ferentially between the ferrule and the hose.

annular flange or bead 1 at its hose-engaging end. Whlle the parts W111 firmly tgether,when

While various known means for attaching the e m may be readlly separated 1f the coupling to the hose may be employed the means ring M be slid back from the ends of the fingers.

Having described my invention, what I claim is: shown and described is simple and easily applied A coupling comprising 3 S18 eve having a flared and provides a passage of uniform diameter bore, a tapered elastic nipple to fit within the through the devlce' tapered bore of the sleeve, a perforated ferrule The male member of the Couphng compnses fitted in the nipple and having transverse corruga- Preferably taperedelastic nipple 8 Secured to tions, a collar fitted around the base of the nipple, fo m d integral With the hose Section 2, the resilient fingers extending from the collar to en- 50 ternal -D 0 t pp being 011 the Same angle circle the sleeve, and means to compress the of inclination as the flare of the member 3. A fingers about the sleeve, somewhat elongated ferrule 9 is forced into the JOHN MIKULASEK. 

